var is_screen = (window.screen) ? "true" : "false";
function launchCenter(url, name, height, width) {



	var str = "height=" + height;
	str += ",width=" + width;
	if(is_screen) {
		var ah = screen.availHeight - 30;
		var aw = screen.availWidth - 10;
		var xc = (aw - width) / 2;
		var yc = (ah - height) / 2;
		
		str += ",left=" + xc + ",screenX=" + xc;
		str += ",top=" + yc + ",screenY=" + yc;
	}
	str += "toolbar=no,location=no,status=no,directories=no,scrollbars=no,resizable=no";
	
	
	//close first

		galleryWindow= window.open(url, name, str);
		galleryWindow.close();
	
	
	galleryWindow= window.open(url, name, str);
	galleryWindow.focus();
	//return true;
}